[REDACTED] is for removing large swaths of data, while [DATA EXPUNGED] is for data deemed too dangerous for anyone to know. For minor details like the bus' company, you're most likely better off simply copy pasting a string of these: █.

"SCP-####-2 and 3 will become active, Emitting large amounts of an unknown type of radiation and unusual radio frequencies."

"Large amounts" is subjective, and there's no such thing as an unknown type of radiation: radiation simply energy with a certain wavelength, so it can be quantified. Similar nitpick for "unusual radio frequencies."

"all passengers will leave SCP-####-1 at a bus stop outside a local school of which all passengers are students"

If SCP-#### is a school bus, then just say it's a school bus. Everything in the proceeding three paragraphs made me think we were talking about a city bus and adult passengers.

"The time-loop is caused by the mysterious radiation that SCP-####-2 and 3 emit during Event Beta-366 that is currently theorized to be a form of [DATA EXPUNGED]"

How could the foundation possibly know this? The mysterious radiation is mysterious, and as far as I know the Foundation doesn't have any explanation for time loops in any form. Your expungment comes across as less "let your imagination do the work" and more "I don't know how so it's it's expunged"

"When this happens, an alternate version of SCP-####-1 will replace the original SCP-####-1 immediately creating a “swap” effect."

The term "time loop", used throughout and in the title even, is confusing and possibly misleading. Unless I'm reading this wrong, this SCP removes it's passengers from reality and replaces them with a new, nearly identical set of the same people every time the 'event' occurs, but that these people experience time normally and are unaware that they have been replaced.

All in all it seems like a good idea, and distinct from other time loops on the site (as mentioned, I'm not even convinced it's actually a time loop), but it could be worded a lot better and more explicitly. The mystery should come from what's not said in the article, not from ambiguity of wording *within* the article.

My recommendation, as a know-nothing newb, would be: tighten it up. Remove as many of the extraneous elements and details as you can, and leave in only what's necessary for a coherent piece.

Hmm… your changes made some things clearer, but I still can't work out quite what I'm reading about. Is it a time loop or a dimenional rift? Are the passengers ordinary humans who interact with the world, or unresponsive echo's trapped in the loop? And the most important mystery: is it a school bus or not? (Seriously, that's gonna bother me all day)

Actually, (personal opinion ahoy!) the more I read it, the more I think you're trying to put two SCP's into a single SCP article.

The first is a mysterious interdimensional SCP, where anybody who gets on the bus is lost forever and replaced by alternate-universe dopplegangers with absolutely no knowledge of their replacement. The fact that this happens regularly, so these people are replaced every single day on their way to work/school, makes it even creepier.

The second is an interesting story-based SCP, involving a group of bus passengers trapped in a time loop, and the foundation doing various tests to work out the exact rules of the loop (can you interact with the trapped passengers, can you get them off the bus before it resets, what caused of the loop, when did the loop start, etc).

The article is already crowded as a result of these two competing ideas, and then you're adding the mystery of the gamma ray bursts on top of it, and the end result is an article that provides loads of questions and no answers.

My recommendation is basically the same as before: "tighten it up". Pick whichever of those ideas you prefer and focus the article on it, removing the other one along with any unecessary behavior. (For example, if you go for the interdimensional travel-replacement event, having the bus appear and disappear out of nowhere is unecessary: it can go about its business as normal right up until the replacement event)